Metamorphic processes of ice sheet based on crystal texture analysis and deformation test of polar deep ice core

基于极地深冰芯晶体结构分析和变形试验的冰盖变质过程

• 批准号: 22540426
• 负责人: MIYAMOTO Atsushi
• 金额: $ 2.41万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22540426/
• 关键词: 氷; 氷床コア; 結晶組織; a軸方位; 力学試験; X線ラウエ法; ａ軸方位

In order to understand metamorphic processes of ice sheet, ice crystal texture analysis and deformation test of artificial ice samples and ice core samples from ice sheet were carried out. In particular, this research was focused on the a-axis orientation distribution of ice crystals. Ice single crystal growth apparatus as a standard sample and thin section sample deformation test apparatus which can be observed crystal orientation and structure during deformation were also designed and developed. As a result, the anisotropic distribution of a-axes orientation was previously found in deep ice core samples may be formed under limited condition was suggested.

为了了解冰盖的变质过程，对人工冰样和冰盖冰芯样品进行了冰晶结构分析和变形试验。特别是对冰晶的a轴取向分布进行了研究。设计并研制了作为标准样品的冰单晶生长装置和可以观察变形过程中晶体取向和结构的薄片样品变形试验装置。因此，以前在深部冰芯样品中发现了a轴取向的各向异性分布，并提出了在有限条件下可能形成的样品。

项目成果

Crystal growth of air-hydrates over 720,000 years in Dome Fuji ice cores, Antarctica : microscopic observations of morphological changes below 2000-m depth

南极洲富士圆顶冰芯72万年来空气水合物晶体的生长：2000米深度以下形态变化的显微观察

• 发表时间: 2011
• 期刊: Journal of Glaciology
• 影响因子: 3.4
• 作者: Tsutomu Uchida;Atsushi Miyamoto;Atsushi Shin'yama;Takeo Hondoh
• 通讯作者: Takeo Hondoh

Characterization of subgrain boundary types in polar ice (EPICA-DML ice core)

极地冰中亚晶界类型的表征（EPICA-DML 冰芯）

• 发表时间: 2010
• 作者: Ilka Weikusat;Atsushi Miyamoto,Martyn R. Drury,Sepp Kipfstuhl;Sergio H. Faria;Gill M. Pennock and Nobuhiko Azuma
• 通讯作者: Gill M. Pennock and Nobuhiko Azuma

X線ラウエ法による氷結晶の方位解析

使用 X 射线劳厄法分析冰晶的取向

• 发表时间: 2013
• 期刊: 低温科学「氷の物理と化学研究の新展開」
• 作者: Ry. en Shirasaki;Akira Endo;Naomichi Hatano and Hiroaki Nakamura;宮本淳
• 通讯作者: 宮本淳

Ice microstructure in Antarctic deep drilling samples (EDML): Cryogenic EBSD, X-ray Laue diffraction and optical microscopy

南极深钻样品 (EDML) 中的冰微观结构：低温 EBSD、X 射线劳厄衍射和光学显微镜

• 发表时间: 2011
• 作者: Ilka Weikusat;Atsushi Miyamoto;GillM. Pennock;Sepp Kipfstuhl;Sergio H. Faria;Nobuhiko Azuma and Martyn R. Drury
• 通讯作者: Nobuhiko Azuma and Martyn R. Drury

Subgrain boundaries in Antarctic ice quantified by X-ray Laue diffraction

• DOI: 10.3189/002214311795306628
• 发表时间: 2011-03
• 期刊: Journal of Glaciology
• 影响因子: 3.4
• 作者: I. Weikusat;A. Miyamoto;S. H. Faria;S. Kipfstuhl;N. Azuma;T. Hondoh